Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 28, 2000. Coordinates are given as of the end of the day.
| Group ID | Location | Number of sunspots | Area (msh) | Type | CM Passage | Disappearance (W90) | Reappearance (W270) | |
|---|---|---|---|---|---|---|---|---|
| № 9177 | N28 | W03 | 03 | 0000 | BETA | Sep 29, 2000 | Oct 6, 2000 | Oct 20, 2000 |
| № 9176 | S10 | E64 | 01 | 0140 | ALPHA | Oct 4, 2000 | Oct 11, 2000 | Oct 25, 2000 |
| № 9175 | N22 | E51 | 02 | 0020 | BETA | Oct 3, 2000 | Oct 10, 2000 | Oct 24, 2000 |
| № 9174 | S30 | W75 | 01 | 0020 | ALPHA | Sep 23, 2000 | Sep 30, 2000 | Oct 15, 2000 |
| № 9173 | S13 | E34 | 17 | 0110 | BETA | Oct 2, 2000 | Oct 9, 2000 | Oct 22, 2000 |
| № 9172 | N12 | E28 | 06 | 0080 | ALPHA | Oct 1, 2000 | Oct 8, 2000 | Oct 22, 2000 |
| № 9171 | S13 | E00 | 03 | 0050 | ALPHA | Sep 29, 2000 | Oct 6, 2000 | Oct 20, 2000 |
| № 9170 | S06 | W55 | 17 | 0130 | BETA-GAMMA | Sep 25, 2000 | Oct 2, 2000 | Oct 15, 2000 |
| № 9169 | N12 | W51 | 67 | 1190 | BETA-GAMMA | Sep 25, 2000 | Oct 2, 2000 | Oct 16, 2000 |
| № 9167 | N16 | W73 | 04 | 0050 | BETA | Sep 24, 2000 | Oct 1, 2000 | Oct 14, 2000 |
| № 9166 | S11 | W97 | 02 | 0060 | ALPHA | Sep 22, 2000 | Sep 29, 2000 | Oct 12, 2000 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1971 to September 2000. The gray background is the average SSN index.
